单项选择题

What will the woman receive if she is chosen

A．A certificate signed by three professors.
B．A cash, award and a certificate.
C．A medal worth five hundred dollars.
D．An opportunity to interview for an excellent position.

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热门试题

单项选择题

The passage is chiefly about ______.

A．an effort to protect an endangered marine species
B．the civilian use of a military detection system
C．the exposure of a U.S. Navy top-secret weapon
D．a new way to look into the behavior of blue whales

单项选择题

The deep-sea listening system makes use of ______.

A．the sophisticated technology of focusing sounds under water
B．the capability of sound to travel at high speed
C．the unique property of layers of ocean water in transmitting sound
D．low-frequency sounds travelling across different layers of water